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Abstract

Long-span cable-stayed bridges are susceptible to dynamic wind effects due to their inherent flexibility. The fluid flow around the bridge deck should be well understood for the efficient design of an aerodynamically stable long-span bridge system. In this work, the aerodynamic features of a pentagonal-shaped bridge deck are explored numerically. The analytical results are compared with past experimental work to assess the capability of two-dimensional unsteady RANS simulation for predicting the aerodynamic features of this type of deck. The influence of the bottom plate slope on aerodynamic response and flow features was investigated. By varying the Reynolds number (2×104 to 20×104) the aerodynamic behavior at high wind speeds is clarified.

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalEngineering Applications of Computational Fluid Mechanics
Volume10
Issue number1
DOIs
StatePublished - 2016 Jan 1

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Aerodynamics
Bridge decks
Wind effects
Cable stayed bridges
Flow of fluids
Flow fields
Reynolds number

Keywords

  • Aerodynamic behavior
  • Flow field
  • Pentagonal bridge deck
  • Reynolds number
  • Separation interference method
  • Unsteady RANS

ASJC Scopus subject areas

  • Computer Science(all)
  • Modelling and Simulation

Cite this

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title = "Flow field analysis of a pentagonal-shaped bridge deck by unsteady RANS",
keywords = "Aerodynamic behavior, Flow field, Pentagonal bridge deck, Reynolds number, Separation interference method, Unsteady RANS",
author = "Haque, {Md Naimul} and Hiroshi Katsuchi and Hitoshi Yamada and Mayuko Nishio",
year = "2016",
month = "1",
doi = "10.1080/19942060.2015.1099569",
volume = "10",
pages = "1--16",
journal = "Engineering Applications of Computational Fluid Mechanics",
issn = "1994-2060",
publisher = "Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University",
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AU - Haque,Md Naimul

AU - Katsuchi,Hiroshi

AU - Yamada,Hitoshi

AU - Nishio,Mayuko

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Long-span cable-stayed bridges are susceptible to dynamic wind effects due to their inherent flexibility. The fluid flow around the bridge deck should be well understood for the efficient design of an aerodynamically stable long-span bridge system. In this work, the aerodynamic features of a pentagonal-shaped bridge deck are explored numerically. The analytical results are compared with past experimental work to assess the capability of two-dimensional unsteady RANS simulation for predicting the aerodynamic features of this type of deck. The influence of the bottom plate slope on aerodynamic response and flow features was investigated. By varying the Reynolds number (2×104 to 20×104) the aerodynamic behavior at high wind speeds is clarified.

AB - Long-span cable-stayed bridges are susceptible to dynamic wind effects due to their inherent flexibility. The fluid flow around the bridge deck should be well understood for the efficient design of an aerodynamically stable long-span bridge system. In this work, the aerodynamic features of a pentagonal-shaped bridge deck are explored numerically. The analytical results are compared with past experimental work to assess the capability of two-dimensional unsteady RANS simulation for predicting the aerodynamic features of this type of deck. The influence of the bottom plate slope on aerodynamic response and flow features was investigated. By varying the Reynolds number (2×104 to 20×104) the aerodynamic behavior at high wind speeds is clarified.

KW - Aerodynamic behavior

KW - Flow field

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KW - Reynolds number

KW - Separation interference method

KW - Unsteady RANS

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